Instances of this: #4839 #4674 #4662 #4641, probably #4846

Issue on nofog's end (just in case): Virtuoel/NoFog#36

Why does this happen.

Commonalities:

• Always seems to be in a giant modpack.
• Client always contains the mod No Fog.
• Removing No Fog fixes it.

@quat1024 Is there any chance you can provide me with a modpack affected by this problem so i can try to narrow down the problem?
I assume that there is a 3rd mod that has to be present alongside NoFog and Quark for this to occur given what Virtuoel was able to tell me so far: "Been looking into it, but not yet been able to reproduce it with Quark and NoFog alone, so it's likely some weird multi-mod interaction thing going on."

A temporary fix for this should be to force crash the game (in a safe way so that FML catches it and shows an error window instead of force closing) with a message that indicates Quark is not compatible with NoFog. That should at least make it more intuitive for users until the actual problem can be solved.

On ATM 9 I keep getting this error if try to connect to any server with NoFog installed on my side.
But I didnt tested singleplayer and servers with NoFog on server side

It shouldn't do anything server side, but it is most certainly good to know that ATM9 is affected by this.
Now i have something i can potentially use to narrow things down